Salvador Cabanas Shot?

Salvador Cabanas the striker from Paraguay is in serious condition. He was shot in the head during an attack in a bar. Salvador was attacked early in the morning at some bar in Mexico City.
Was Salvador Cabanas shot because he was a victim of a robbery?
Do you think it was intentional and the guy who shot him knew that he was Salvador Cabanas?
I hope he makes it, he was a wonderful soccer player.